For all it's worth: the Gimp devs were originally the creators of GTK+, which stood for "GIMP Toolkit" - so GIMP doesn't rely on QT.
And unless you feel like telling your package manager no, an inordinately painful experience involving tracking down the errant dep and blocking it, and having to be forever vigilant going forward against future insistent prods from your OS, you'll just grumble a bit and put up with that nonsense. Life's too short to spend it keeping Qt off your system.